Alaaddin Carpet.md

 private static int optimalPoint(int[] magic, int[] dist) {
        int startIndex = 0;
        int remainingMagic = 0;
        int usedMagic = 0;
        int length = magic.length;
        
        for (int i = 0; i < length; i++) {
            remainingMagic += magic[i] - dist[i];
            if (remainingMagic < 0) {
                startIndex = i + 1;
                usedMagic += remainingMagic;
                remainingMagic = 0;
            }
        }
        return usedMagic + remainingMagic >= 0 ? startIndex : -1;
    }